Journal of Energy Engineering (에너지공학)

The Korean Society for Energy (한국에너지학회)
권호 표지

Effect of Nozzle Distance and Angle in the Iron-ore Sintering Dual Burner on Flame Characteristics

철광석 소결용 듀얼 버너의 노즐 간격과 각도가 화염 특성에 미치는 영향

  • Lee, Young-Jun (Graduate School of Mechanical Engineering, Pusan National University) ;
  • Hwang, Min-Young (Graduate School of Mechanical Engineering, Pusan National University) ;
  • Kim, Gyu-Bo (School of Mechanical Engineering, Pusan National University) ;
  • Song, Ju-Hun (School of Mechanical Engineering, Pusan National University) ;
  • Chang, Young-June (School of Mechanical Engineering, Pusan National University) ;
  • Jeon, Chung-Hwan (School of Mechanical Engineering, Pusan National University)
  • 이영준 (부산대학교 기계공학부 대학원) ;
  • 황민영 (부산대학교 기계공학부 대학원) ;
  • 김규보 (부산대학교 기계공학부) ;
  • 송주헌 (부산대학교 기계공학부) ;
  • 장영준 (부산대학교 기계공학부) ;
  • 전충환 (부산대학교 기계공학부)
  • Received : 2010.09.01
  • Accepted : 2010.09.20
  • Published : 2010.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

The objective of this study is to investigate the combustion characteristics of dual type of sintering burner as a function of design parameters using lab-scale sintering burner through experimental and numerical approaches. Combustion characteristics were evaluated by the radical method. The numerical model was verified as a temperature using R type of thermocouple at the bed surface. The effect of nozzle distance and angle were performed through the CFD analysis, and the comparison of burner types. As a results, dual type burner has more wider and uniform flame distribution than single type burner. Asymmetry and 45 degree angle condition have been suggested as an optimal condition for the ignition of the sintering bed surface.

소결버너를 이용한 표면점화는 제철공정에서 철광석의 소결을 위한 중요한 공정 중 하나이다. 본 연구에서는 듀얼 타입 소결 버너의 연소 특성을 분석하기 위하여 실험실적 규모의 실험과 전산 해석을 수행하였다. 라디칼 측정을 통해 연소특성을 파악하였으며, 열전대를 이용한 실험과 전산 해석 결과를 검증하였다. 검증된 전산 해석 모델을 바탕으로 싱글타입 소결 버너와 듀얼 타입 소결버너의 연소를 비교하였으며, 노즐 간격과 각도가 연소에 미치는 영향을 분석하기 위하여 3가지 노즐 간격 및 4개의 노즐 각도에 대한 전산해석을 수행하였다. 듀얼 타입이 싱글 타입 소결 버너보다 넓고 균일한 화염 폭을 형성함을 확인하였으며, 45도 비대칭 노즐 간격이 소결 베드 표면 점화를 위한 최적의 화염 폭을 형성함을 확인할 수 있었다.

Keywords

References

  1. Yang, W., Ryu, C. K. and Choi, S. M., 2003, "Modeling of Coke Combustion and heat Transfer in an Ore Sintering Bed with Considerations of Multiple Solid Phases," Proceeding. of the KSME, pp. 79-84
  2. Yang, K. H., Yang, W. and Choi, S. M., 2004, "Modeling if Coking Process in a Coke Oven," Trans. of the KSME, 5, pp. 1184-1189.
  3. Yang, W., Yang, K. H, Choi., S. M., Choi, E. S., Li, D. W. and Kim, S. M., 2004, "A Study on the Combustion Characteristics of Coke and Anthracite in an Iron Ore Sintering Bed," Trans. of the KOSCO, Vol. 23, No. 5, pp. 30-37.
  4. Yang, K. H., Yang, W., Ryu, C. K. and Choi, S. M., 2003, "Mathematical Approach of Thermo-fluid Characteristics in a Coke Oven," KOSCO symposium, pp. 43-47.
  5. Kim, Y. S., Cho, S W, Kim, G. B. Chang, Y. J. and Jeon, C. H., 2007, "A Study of Characteristics of Combustion Radical and Exhausted Emixxion in a Radiant Burner With Oorous Ceramic Mat," KSME, Vol. 31, No. 6, pp. 539-546.
  6. Ahn, K. M., Jeong, Y. K, Chang., Y. J., and Jeon, C. H., 2005, "An Experimental Investigation of The Characteristics of Radical and Pollutant Emission in Partially Premixed Swirling Methane-air Flame," KOSCO symposium, pp. 320-327.
  7. Jeong, Y. K., Oh, J S, Jeon, C. H., and Chang, Y. J., 2005, "Detailed Local Chemiluminescence Measurement and Nitrogen Oxides Emissuin in Laminar Partually Premixed CH4,/Air Flames" KSME, Vol. 29, No. 2, pp. 263-270.
  8. Ahn, K. M., Jeong, Y. K, Chang., Y. J., and Jeon, C. H., 2005, "An Experimental Investigation of Temperature and Flame Structure Related to Chemiluminescence in Partially Premixed laminar Methane-Air Flames," KOSCO symposium, pp. 178-185.
  9. Choi, W. S., Lee, S. M, Kim., H. S., Cho, J. H., Ahn, K. Y. and Kim, Y. M., 2009, "Experimental study on the Combustion Characteristics of Syngas-Oxifuel Diffusion Flame," KOSCO symposium, pp. 111-117.
  10. Kim, H. J., Choi, W Y, Bae, S. H., Hong, J. G., and Shin, H. D., 2008, "A Study on Oxy-Fuel Combustion System with Multi-Jet Burner Numerical Simualtion with PDF Combustion Model" KSME, Vol. 32, No. 7, pp. 504-512.
  11. Kim, J. K., Kim, S H, Lee, Y. S. and Huh, K. Y., 1997, "Numerical Analysis of s swirl burner by FLUENT," Proceeding. of the KSCFE, pp. 85-93.